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Tantalum capacitor

About: Tantalum capacitor is a research topic. Over the lifetime, 2432 publications have been published within this topic receiving 26709 citations.


Papers
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Patent
19 Nov 1999
TL;DR: In this article, a process for producing an electrochemical capacitor including an organic electrolytic solution and electrode bodies immersed in the OE solution, each comprising a polarizing electrode (composed mainly of a carbon material containing a partially oxidized, graphite-like microcrystalline carbon), a separator and a collector, in which capacitor each polarizing electrodes gives rise to volume expansion when charged and volume contraction when discharged, is provided.
Abstract: A process for producing an electrochemical capacitor including an organic electrolytic solution and electrode bodies immersed in the organic electrolytic solution, each comprising a polarizing electrode (composed mainly of a carbon material containing a partially oxidized, graphite-like microcrystalline carbon), a separator and a collector, in which capacitor each polarizing electrode gives rise to volume expansion when charged and volume contraction when discharged, is provided. The process includes: a step of placing each electrode body and the organic electrolytic solution in a cell container to form a unit cell, a step of placing the unit cell or a cell integrate obtained by electrically connecting a plurality of such unit cells, in a first capacitor container to constitute a first electrochemical capacitor, a step of subjecting the first electrochemical capacitor to charging-discharging cycles until the maximum value of the stress caused by the volume expansion of each polarizing electrode during charging becomes almost constant, and a step of transferring, after the maximum value of the stress has become almost constant, the unit cell or the cell integrate into a second capacitor container to constitute a second electrochemical capacitor. The process can provide an electrochemical capacitor which causes no plastic deformation of the capacitor container and which is superior in durability and reliability.

12 citations

Patent
18 Dec 2006
TL;DR: In this paper, a method for screening electrolytic capacitors was proposed, where a capacitor was placed in series with a resistor and a resistor was placed with a capacitor, and a test voltage was applied to reject the piece.
Abstract: A method for screening electrolytic capacitors places a capacitor in series with a resistor in series with a resistor, applying a test voltage and following the charge curve for the capacitor. A high voltage drop indicates high reliability and a low voltage drop is used to reject the piece. The leakage current is not adversely affected during the test.

12 citations

Patent
10 Oct 2000
TL;DR: In this article, a method of integrating tantalum oxide into an MIM capacitor for a semiconductor device, comprising the step of vapordepositing the tantalum oxides from an oxygen-free liquid precursor and under process conditions comprising a deposition temperature of less than about 500° C.
Abstract: The present invention provides a method of integrating tantalum oxide into an MIM capacitor for a semiconductor device, comprising the step of vapor-depositing the tantalum oxide from an oxygen-free liquid precursor and under process conditions comprising a deposition temperature of less than about 500° C. and a deposition pressure of less than about 96 Torr, wherein the tantalum oxide is integrated into the MIM capacitor. Also provided is a method of forming an MIM capacitor comprising the step of integrating a tantalum oxide dielectric film with a tantalum nitride or a titanium nitride bottom electrode deposited on a substrate and a titanium nitride top electrode thereby forming an MIM capacitor.

12 citations

Journal ArticleDOI
TL;DR: In this paper, the role of sintered tantalum as volumetric efficient electrical capacitor powder characteristics and sintering aspects are discussed, as well as impurities in influencing the electrical properties.
Abstract: The paper reviews the role of sintered tantalum as volumetric efficient electrical capacitor Powder characteristics and sintering aspects are discussed The role of impurities in influencing the electrical properties has been described Today’s driving force behind the Ta market is the use of surface mounted versions known as chip types, for applications requiring a wide range of operational temperature, such as automotive electronics

12 citations

Patent
05 Apr 1976
TL;DR: In this paper, a process for forming a solid tantalum capacitor is disclosed wherein the cathode is manganese dioxide formed by pyrolysis, performed in a nitrogen dioxide containing atmosphere at a temperature of between about 170° C and 250° C.
Abstract: A process for forming a solid tantalum capacitor is disclosed wherein the cathode is manganese dioxide formed by pyrolysis. The pyrolysis is performed in a nitrogen dioxide containing atmosphere at a temperature of between about 170° C. and 250° C., the nitrogen dioxide containing atmosphere comprising at least about 10% by volume of nitrogen dioxide, the remainder of said atmosphere being water vapor and gas inert in the pyrolysis process.

12 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20238
20227
20219
202020
201924
201834